body {
    position: absolute;
    background-color: #f8f8f8;
    /*background-color: white;*/

}

ul.nav{
    position: sticky;
    top: 20px;
    margin-top: 20px;
    background-color:#343a40;
    border-radius: 5px;
    margin-bottom: 70%;

}



div.polaroid {
    background-color: white;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    border-radius: 5px;

  }
  
 p {text-indent:34px;}

.footer{
    background:#333333;
    color:white;
    height: 50px;
    margin:-20px;
}